60721587 has 24 divisors (see below), whose sum is σ = 96345600. Its totient is φ = 36680688.

The previous prime is 60721579. The next prime is 60721589. The reversal of 60721587 is 78512706.

60721587 is a `hidden beast` number, since 6 + 0 + 72 + 1 + 587 = 666.

It is not a de Polignac number, because 60721587 - 2³ = 60721579 is a prime.

It is a super-2 number, since 2×60721587² = 7374222255597138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (60721589) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3787 + ... + 11652.

It is an arithmetic number, because the mean of its divisors is an integer number (4014400).

Almost surely, 2^60721587 is an apocalyptic number.

60721587 is a deficient number, since it is larger than the sum of its proper divisors (35624013).

60721587 is a wasteful number, since it uses less digits than its factorization.

60721587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15487 (or 15484 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 60721587 is about 7792.4057260900. The cubic root of 60721587 is about 393.0499130514.

The spelling of 60721587 in words is "sixty million, seven hundred twenty-one thousand, five hundred eighty-seven".